18 lines
472 B
Ruby
18 lines
472 B
Ruby
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# frozen_string_literal: true
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module NumberHelper
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# Converts a precise number to an approximate with no more than 4 digits.
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#
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# @example
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# estimate_number(2) # 2
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# estimate_number(25) # 25
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# estimate_number(308) # 308
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# estimate_number(1234) # 1234
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# estimate_number(120345) # 120300
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def estimate_number(number)
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digits = [(Math.log10([number, 1].max).to_i - 3), 0].max
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divide = 10**digits
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divide * (number / divide).to_i
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end
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end
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